add some minor notes..

NOTES.md

@@ -11,3 +11,12 @@ direct hash import is used.
 Local cache:
 	if a directory like ~/.cas_cache exists, use it's contents automatically,
 	and if it's writable, write any network fetched imported data to it.
+
+Features:
+	add:
+		file
+		url
+		ipfs hash
+		git(?)hub?
+
+	init cache: